// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Ricoh RP5C01(A) Real Time Clock With Internal RAM emulation ********************************************************************** _____ _____ _CS 1 |* \_/ | 18 Vcc CS 2 | | 17 OSCOUT ADJ 3 | | 16 OSCIN A0 4 | RP5C01 | 15 _ALARM A1 5 | RP5C01A | 14 D3 A2 6 | RF5C01A | 13 D2 A3 7 | TC8521 | 12 D1 _RD 8 | | 11 D0 GND 9 |_____________| 10 _WR **********************************************************************/ #pragma once #ifndef __RP5C01__ #define __RP5C01__ #include "emu.h" //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MCFG_RP5C01_OUT_ALARM_CB(_devcb) \ devcb = &rp5c01_device::set_out_alarm_callback(*device, DEVCB_##_devcb); // include this macro if the chip is not battery backed #define MCFG_RP5C01_REMOVE_BATTERY() \ rp5c01_device::remove_battery(*device); //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> rp5c01_device class rp5c01_device : public device_t, public device_rtc_interface, public device_nvram_interface { public: // construction/destruction rp5c01_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock); template static devcb_base &set_out_alarm_callback(device_t &device, _Object object) { return downcast(device).m_out_alarm_cb.set_callback(object); } static void remove_battery(device_t &device) { downcast(device).m_battery_backed = false; } DECLARE_READ8_MEMBER( read ); DECLARE_WRITE8_MEMBER( write ); DECLARE_READ_LINE_MEMBER( alarm_r ) { return m_alarm; } DECLARE_WRITE_LINE_MEMBER( adj_w ) { if (state) adjust_seconds(); } protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; // device_rtc_interface overrides virtual bool rtc_feature_leap_year() override { return true; } virtual void rtc_clock_updated(int year, int month, int day, int day_of_week, int hour, int minute, int second) override; // device_nvram_interface overrides virtual void nvram_default() override; virtual void nvram_read(emu_file &file) override; virtual void nvram_write(emu_file &file) override; private: inline void set_alarm_line(); inline int read_counter(int counter); inline void write_counter(int counter, int value); inline void check_alarm(); static const device_timer_id TIMER_CLOCK = 0; static const device_timer_id TIMER_16HZ = 1; devcb_write_line m_out_alarm_cb; bool m_battery_backed; UINT8 m_reg[2][13]; // clock registers UINT8 m_ram[13]; // RAM UINT8 m_mode; // mode register UINT8 m_reset; // reset register int m_alarm; // alarm output int m_alarm_on; // alarm condition int m_1hz; // 1 Hz condition int m_16hz; // 16 Hz condition // timers emu_timer *m_clock_timer; emu_timer *m_16hz_timer; }; // device type definition extern const device_type RP5C01; #endif